OUTBACK MINERAL Crossword Clue
OUTBACK MINERAL Crossword Clue
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Crossword Puzzle Infos
Outback Mineral is a term used to describe OPAL, a mineral composed of hydrated amorphous silica. OPAL is found in many parts of the world, but is especially abundant in Australia, where it is known as the national gemstone. It is often referred to as Outback Mineral due to its prevalence in the Australian Outback.